Home / 1,399.16-1,929.20-1,045.73

Finding the Fourth Proportional to 1,399.16, 1,929.20 and 1,045.73

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Solution

The fourth proportional to 1,399.16, 1,929.20 and 1,045.73 is: 1,441.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399.16 : 1,929.20 = 1,045.73 : x
  2. Step 2: Convert to fraction form
    1,399.16/1,929.20 = 1,045.73/x
  3. Step 3: Cross multiply
    1,399.16x = 1,929.20 × 1,045.73
  4. Step 4: Simplify right side
    1,399.16x = 2,017,407.44
  5. Step 5: Solve for x
    x = 2,017,407.44/1,399.16
  6. Step 6: Final answer
    x = 1,441.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.